If the range of a gun which fires a shell with muzzle speed $V$ is $R$, then the angle of elevation of the gun is
If the range of a gun which fires a shell with muzzle speed $V$ is $R$, then the angle of elevation of the gun is
- A
${\cos ^{ - 1}}\left( {\frac{{{V^2}}}{{Rg}}} \right)$
- B
${\cos ^{ - 1}}\left( {\frac{{gR}}{{{V^2}}}} \right)$
- C
$\frac{1}{2}\left( {\frac{{{V^2}}}{{Rg}}} \right)$
- D
$\frac{1}{2}{\sin ^{ - 1}}\left( {\frac{{gR}}{{{V^2}}}} \right)$
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